/*
**************************************************************************************
*Myriad Engine                                                                       *
*Copyright (C) 2006-2007, 5d Studios (www.5d-Studios.com)                            *
*                                                                                    *
*This library is free software; you can redistribute it and/or                       *
*modify it under the terms of the GNU Lesser General Public                          *
*License as published by the Free Software Foundation; either                        *
*version 2.1 of the License, or (at your option) any later version.                  *
*                                                                                    *
*This library is distributed in the hope that it will be useful,                     *
*but WITHOUT ANY WARRANTY; without even the implied warranty of                      *
*MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU                   *
*Lesser General Public License for more details.                                     *
*                                                                                    *
*You should have received a copy of the GNU Lesser General Public                    *
*License along with this library; if not, write to the Free Software                 *
*Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA      *
**************************************************************************************
*/
package leola.types;


/**
 * Leola's null object.
 * 
 * @author Tony
 *
 */
public class LeoNull extends LeoObject {

	/**
	 * the singleton object
	 */
	public static final LeoNull LEONULL = new LeoNull();
	
	/**
	 * @param type
	 */
	private LeoNull() {
		super(LeoType.NULL);		
	}

	/* (non-Javadoc)
	 * @see leola.types.LeoObject#toString()
	 */
	@Override
	public String toString() {
		return "null";
	}

	/* (non-Javadoc)
	 * @see leola.types.LeoObject#eq(leola.types.LeoObject)
	 */
	@Override
	public boolean eq(LeoObject other) {
		return (other != null ) && (other == this);
	}

	/* (non-Javadoc)
	 * @see leola.types.LeoObject#gt(leola.types.LeoObject)
	 */
	@Override
	public boolean gt(LeoObject other) {
		return false;
	}

	/* (non-Javadoc)
	 * @see leola.types.LeoObject#lt(leola.types.LeoObject)
	 */
	@Override
	public boolean lt(LeoObject other) {
		return false;
	}
	
	/* (non-Javadoc)
	 * @see leola.types.LeoObject#getValue()
	 */
	@Override
	public Object getValue() {
		return LEONULL;
	}
	
	/* (non-Javadoc)
	 * @see leola.types.LeoObject#clone()
	 */
	@Override
	public LeoObject clone() {
		return this;
	}
}
